Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 8156904 | Variable volume crossover passage for a split-cycle engine An engine includes a crankshaft rotatable about a crankshaft axis. A compression piston is slidably received within a compression cylinder and operatively connected to the crankshaft such that the compression piston is operable to reciprocate through an intake strok... | 04/17/2012 |
| 7353786 | Split-cycle air hybrid engine A split-cycle air hybrid engine operatively connects an air reservoir to a split cycle engine. A power piston is received within a power cylinder and operatively connected to a crankshaft such that the power piston reciprocates through an expansion stroke and an exh... | 04/08/2008 |
| 7273026 | Roller follower body The present invention relates to a roller follower, comprising an outer surface, enclosing a first cavity, a second cavity, and a transition opening, wherein the first cavity includes a first inner surface configured to house a cylindrical insert the second cavity i... | 09/25/2007 |
| 7219647 | Force transfer mechanism for an engine A multiple watt-linkage force transfer mechanism is provided for an internal-combustion engine. The force transfer mechanism comprises two “bell cranks” that are used to drive a single crankshaft through a watt linkage mechanism. Each bell crank, in turn, is dri... | 05/22/2007 |
| 7178501 | Crankshaft assembly of an internal combustion engine The invention is directed to a crankshaft (1) of an internal combustion engine including an internal combustion engine for a portable handheld work apparatus such as a motor-driven chain saw or the like. The invention is also directed to a method for making t... | 02/20/2007 |
| 7117838 | Internal combustion engine In an internal combustion engine, a piston reciprocating in a cylinder and a crankshaft are linked with each other by a piston-crank linking mechanism. The crankshaft includes a counterweight. When the piston is located in the proximity of a bottom dead center, an o... | 10/10/2006 |
| 6904888 | Reciprocating piston device A reciprocating piston engine (or motor) includes plural reciprocating pistons operatively connected to a single intermediate oscillating shaft, and a crankshaft having a single crank pin operatively connected to the oscillating shaft, so that the crankshaft experie... | 06/14/2005 |
| 6799542 | Engine having piston-cam assembly powertrain An engine having a piston-cam assembly powertrain consisting of a rocking yoke assembly that oscillates about its middle point to rotate a multiple-lobe cam. The mechanism is so constructed that cam followers at both ends of the oscillating yoke make contact with th... | 10/05/2004 |
| 6722127 | Split four stroke engine A four stroke engine including a crankshaft. A power piston within a first cylinder connected to the crankshaft such that the power piston reciprocates through a power stroke and an exhaust stroke. A compression piston within a second cylinder is connected to the cr... | 04/20/2004 |
| 6609371 | Split four stroke engine A four stroke cycle internal combustion engine including a crankshaft, rotating about a crankshaft axis of the engine. A power piston is slidably received within a first cylinder and operatively connected to the crankshaft such that the power piston recip... | 08/26/2003 |
| 6543225 | Split four stroke cycle internal combustion engine A four stroke cycle internal combustion engine including a crankshaft, rotating about a crankshaft axis of the engine. A power piston is slidably received within a first cylinder and operatively connected to the crankshaft such that the power piston recip... | 04/08/2003 |
| 6334423 | Reciprocating piston engine and its link mechanism A link mechanism for a reciprocating piston engine and the like is characterized in that: motions of a pair of cylinder-type pistons moving in opposite directions relative to each other are converted into an oscillating-type rotary motion through an oscil... | 01/01/2002 |
| 6250264 | Internal combustion engine with arrangement for adjusting the compression ratio The internal combustion engine has a plurality of cylinders which are arranged in an annular series about a common central drive shaft. Each cylinder includes a pair of opposed pistons which are movable towards and away from each other while defining a co... | 06/26/2001 |
| 5758611 | Flex-rod A two-stroke, U-type uniflow engine includes a cylinder block forming parallel first and second cylinders and a common combustion chamber connecting the first and second cylinders. First and second pistons are mounted for reciprocal, linear movement withi... | 06/02/1998 |
| 5655406 | Rotary motion drive system An object of the present invention is to provide a rotary motion drive system, which is capable of increasing the efficiency of converting the linear motion into the rotary motion. In the rotary motion drive system of the present invention, a pair of firs... | 08/12/1997 |
| 5431130 | Internal combustion engine with stroke specialized cylinders A multi-cylinder reciprocating piston internal combustion engine is divided into a working section and a compressor section, with the working section supporting the combustion function and the compressor dedicated solely to infusion of intake charge into ... | 07/11/1995 |
| 4827896 | Internal combustion engine without connecting rods A reciprocating, multicylinder, 4-cycle internal combustion engine having a rotating power output crankshaft wherein the conventional connecting rod is replaced by a carrier member, attached to the piston and directed toward the open end of the cylinder a... | 05/09/1989 |
| 4825820 | Power system for piston engines & compression devices This device is an improvement over the typical power systems of two and four cycle engines, compressors, and external combustion engines. The device replaces the conventional crankshaft and connecting rod with a straight power shaft, power shaft arm, slid... | 05/02/1989 |
| 4813386 | Internal combustion engine without connecting rods A reciprocating, multicylinder, 4-cycle internal combustion engine having a rotating power output crankshaft wherein the conventional connecting rod is replaced by a carrier member, attached to the piston and directed toward the open end of the cylinder a... | 03/21/1989 |
| 4566408 | Internal combustion engine The present disclosure relates to internal combustion engines of the kind comprising two working cylinders arranged in vertical side-by-side parallel relationship, there being two oppositely working pistons in each cylinder, and the movement of the four p... | 01/28/1986 |
| 4543917 | Internal combustion engine A two stroke diesel engine requiring a minimum of one pair of cylinders is constructable in multiple cylinder pairs. Each cylinder contains two oppositely working pistons. Four pistons drive, without rocking couples, opposite sides of a single crankshaft ... | 10/01/1985 |
| 4338892 | Internal combustion engine with smoothed ignition An internal combustion engine has piston means reciprocable in cylinder means, a crankshaft having an axis, and connecting rod structure. Further, the engine is characterized by: (a) the cylinder means includes two generally side-by-side cylinders, at lea... | 07/13/1982 |
